index.css

:root{
    --transition: all 0.7s ease;   /* background and padding will transition, 0.7s delay before start,start slow then fast end slow */
    --yellow:#f9d342 ;
    --dark: black;
}
*{
    box-sizing: border-box;
    padding: 0;
    margin: 0;
    font-family: barlow condensed, serif;
}

body{
    line-height: 1.6;
}

.btn{
    font-size: 16px;
    text-transform: uppercase;
    font-weight: 600;
    border: none;
    border-radius: 5px;
    padding: 10px;
    width: 140px;
    display: block;
    margin: 15px auto;
    cursor: pointer;
    transition: var(--transition);
}

.btn:hover{
    opacity: 0.85;
}

.flex{
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

h1, h2, h3, h4, h5, h6{
    padding: 8px 0;
}
img{
    width: 100%;
    display: block;
}
@media(max-width: 500px){
    body{
        font-size: 14px;
    }
}

/* header */
.header{
    background: linear-gradient(rgba(0, 0, 139, 0.6), rgba(0, 0, 128, 0.2)), url("") center/cover no-repeat;
    min-height: 100vh;
    color: white;
    padding: 25px;
    display: flex;
    flex-direction: column;
    align-content: stretch;
}
.head-top{
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.head-top span{
    cursor: pointer;
    transition: var(--transition);
    font-size: 20px;
}
.head-top span:hover{
    color: crimson;
    font-weight: bolder;
    
}
.head-bottom{
    flex: 1;
    text-align: center;
    width: 80vw;
    margin: 0 auto;
}

.head-bottom span:hover{
     color: black;
    font-weight: bolder;
}
.head-bottom h2{
    padding: 22px 0;
    font-size: 45px;
    border-bottom: 1px solid white;
}
.head-bottom p{
    opacity: 0.7;
    font-size: 20px;
    margin: 45px auto;
    width: 60vw;
}
.head-btn{
    margin: 20px 0;
    font-size: 20px;
    font-weight: bold;
    border: 3px solid white;
    background: transparent;
    padding: 13px 20px;
    background: rgba(0, 0, 0, 0.3);
    color: white;
    cursor: pointer;
    transition: var(--transition);
    list-style-type:none;
}
.head-btn:hover{
    background: transparent;
}
@media(max-width: 500px){
    .head-btn{
        font-size: 17px;
    }
    .head-bottom h2{
        font-size: 28px;
    }
    .head-bottom p{
        font-size: 17px;
        margin: 20px auto;
    }
}

/* side nav */
.sidenav{
    background: var(--dark);
    color: white;
    position: fixed;
    top: 0;
    bottom: 0;
    right: -100%;
    width: 300px;
    padding: 20px;
    transition: var(--transition);
    z-index: 10;
}


.sidenav.show{
    right: 0;
}

.cancel-btn{
    position: absolute;
    right: 25px;
    font-size: 22px;
    cursor: pointer;
    transition: var(--transition);
}
.cancel-btn:hover{
    opacity: 0.7;
}
.navbar{
    margin-top: 50px;
    list-style: none;
    padding: 12px;
}
.navbar li a{
    color: #fff;
    text-transform: capitalize;
    text-decoration: none;
    padding: 15px 0;
    display: block;
    border-bottom: 0.5px solid rgba(249, 211, 66, 0.3);
    opacity: 0.8;
    letter-spacing: 1.5px;
    transition: var(--transition);
}
.navbar li a:hover{
    padding-left: 12px;
}
.log-in{
    background: var(--yellow);
}
@media(max-width: 400px){
    .sidenav{
        width: 100vw;
    }
}

/** title */
.title{
    text-transform: uppercase;
    letter-spacing: 3px;
    font-size: 20px;
    color: navy;
    border-bottom: 5px solid black;
    width: 235px; 
    margin: 15px 0;
}

.sec-width{
    width: 85vw;
    margin: 0 auto!important;
}

/* service */
.services{
    margin: 40px 0;
}
.service{
    display: flex;
    margin: 30px 0;
}
.service-icon{
    flex: 30%;
    align-self: flex-start;
    font-size: 48px;
    color: #252525;
}
.service-content{
    padding-left: 20px;
}
.service-content h2{
    opacity: 0.7;
}
.service-content button{
    margin-left: 0;
    margin-right: 0;
    background: navy;
    color: white;
}
@media(min-width: 992px){
    .services-container{
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        grid-column-gap: 30px;
    }
    .title h2{
        font-size: 10px!important;
    }
}
@media(max-width: 500px){
    .title h2{
        font-size: 24px;
    }
}

/* customers */

.customers{
    margin-top: 40px;
    padding: 40px 0;
    background: linear-gradient(rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.5)), url("https://gfp-2a3tnpzj.stackpathdns.com/wp-content/uploads/2019/01/litter-of-terrier-mix-puppies-in-a-blue-dog-bed-600x600.jpg") center/cover no-repeat fixed;
}

.apprentice{
    background: white;
    padding: 35px;
    text-align: center;
    margin: 24px 0;
    box-shadow: 0px 0px 5px rgba(0, 0, 0, 0.75);
    cursor: pointer;
    transition: var(--transition);
}
.apprentice h3{
    font-size: 25px;
}
.apprentice p{
    opacity: 0.7;
    line-height: 1.8;
    width: 60%;
    margin: 0 auto;
}
.apprentice img{
    width: 170px;
    height: 170px;
    border-radius: 50%;
    margin: 25px auto;
}
.apprentice span{
    font-weight: 700;
    opacity: 0.7;
}
.apprentice:hover{
    transform: translateY(-18px);
}
@media(min-width: 992px){
    .apprentices-container{
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        grid-gap: 30px;
    }
}
@media(min-width: 1270px){
    .apprentices-container{
        display: grid;
        grid-template-columns: repeat(3, 1fr);
    }
}

@media(max-width: 500px){
    .apprentice p{
        width: 100%;
    }
    .apprentice img{
        width: 100px;
        height: 100px;
    }
}
/* footer */
.footer{
    background: var(--dark);
    color: white;
    text-align: center;
}
.footer-container{
    width: 85vw;
    margin: 0 auto;
    padding: 30px 0;
}
.footer-container p, .footer-container a, .footer-container span{
    opacity: 0.8;
}
.footer a{
    display: block;
    color: white;
    text-decoration: none;
}
.social-icons{
    list-style: none;
    display: flex;
    justify-content: center;
    padding: 15px 0;
}
.social-icons li{
    margin: 0 10px;
    width: 50px;
    height: 50px;
    background: black;
    border-radius: 50%;
    transition: var(--transition);
    cursor: pointer;
}
.social-icons li:hover{
    background: white;
    color: black;
}
.contact-item span{
    display: block;
}

@media(min-width: 900px){
    .footer-container{
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        grid-gap: 20px;
    }
}
@media(min-width: 1170px){
    .footer{
        text-align: left;
    }
    .footer-container{
        grid-template-columns: repeat(4, 1fr);
    }
    .footer-container div:nth-child(1) p{
        padding-right: 20px;
    }
    .contact-item{
        display: grid;
        grid-template-columns: 10% 90%;
        margin-bottom: 15px;
        align-items: center;
    }
}

.showModal{
    position: fixed;
    background: transparent;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    z-index: 5;
}